Trump vows revenge on Iran and what to watch in Arizona’s primaries: Morning Rundown

Key Points:

• President Trump has vowed retaliation against Iran following the deaths of three U.S. service members, as the conflict escalates with recent attacks and the collapse of an April ceasefire agreement.
• Arizona is preparing for highly competitive primary elections, including key races for governor, secretary of state, and a hotly contested congressional district, with candidates reflecting ongoing divisions from the 2020 election.
• Trump announced 50% tariffs on most Canadian goods, citing alleged discrimination against American products, a move that risks increasing inflation and straining U.S.-Canada relations despite exemptions for some sectors.
• The World Artificial Intelligence Conference in Shanghai showcased China's latest AI technologies, featuring robots, AI chips, and interactive exhibits that attracted a wide range of attendees from students to world leaders.
• A tragic drowning at Texas’s Lake Ray Hubbard highlights the dangers of the large, debris-filled human-made lake, despite the victim being an experienced swimmer; the incident remains under investigation amid concerns over the lake's hazards.